Messages in this thread Patch in this message | | | Date | Thu, 14 Sep 2006 10:03:02 -0700 | From | "David Singleton" <> | Subject | Re: OpPoint summary |
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> Care to resend your patches in the proper format, through email so that > we can see them, and possibly get some testing in -mm if they look sane?
Greg, here's the patch that leverages the cpufreq notifier lists for driver PRE and POST change functions. I'm also rebasing to 2.6.18-rc7 and making changes Pavel suggested about just having suspend states in /sys/power/state and moving the operating point control file down under /sys/power/operating_states directory.
Signed-Off-by: David Singleton <dsingleton@mvista.com>
drivers/cpufreq/cpufreq.c | 36 ++++++++++++++++++++++++++++++++++++ include/linux/cpufreq.h | 2 ++ 2 files changed, 38 insertions(+)
Index: linux-2.6.17/drivers/cpufreq/cpufreq.c =================================================================== --- linux-2.6.17.orig/drivers/cpufreq/cpufreq.c +++ linux-2.6.17/drivers/cpufreq/cpufreq.c @@ -226,6 +226,35 @@ static void adjust_jiffies(unsigned long static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) { return; } #endif
+int cpufreq_prepare_transition(struct oppoint *cur, struct oppoint *new) +{ + struct cpufreq_freqs freqs; + + freqs.old = cur->frequency; + freqs.new = new->frequency; + freqs.cpu = 0; + freqs.flags = new->flags; + blocking_notifier_call_chain(&cpufreq_transition_notifier_list, + CPUFREQ_PRECHANGE, &freqs); + adjust_jiffies(CPUFREQ_PRECHANGE, &freqs); + return 0; +} +EXPORT_SYMBOL(cpufreq_prepare_transition); + +int cpufreq_finish_transition(struct oppoint *cur, struct oppoint *new) +{ + struct cpufreq_freqs freqs; + + freqs.old = cur->frequency; + freqs.new = new->frequency; + freqs.cpu = 0; + freqs.flags = new->flags; + adjust_jiffies(CPUFREQ_POSTCHANGE, &freqs); + blocking_notifier_call_chain(&cpufreq_transition_notifier_list, + CPUFREQ_POSTCHANGE, &freqs); + return 0; +} +EXPORT_SYMBOL(cpufreq_finish_transition);
/** * cpufreq_notify_transition - call notifier chain and adjust_jiffies @@ -920,6 +949,12 @@ static void cpufreq_out_of_sync(unsigned }
+#ifdef CONFIG_PM +unsigned int cpufreq_quick_get(unsigned int cpu) +{ + return (current_state->frequency); +} +#else /** * cpufreq_quick_get - get the CPU frequency (in kHz) frpm policy->cur * @cpu: CPU number @@ -941,6 +976,7 @@ unsigned int cpufreq_quick_get(unsigned
return (ret); } +#endif EXPORT_SYMBOL(cpufreq_quick_get);
Index: linux-2.6.17/include/linux/cpufreq.h =================================================================== --- linux-2.6.17.orig/include/linux/cpufreq.h +++ linux-2.6.17/include/linux/cpufreq.h @@ -268,6 +268,8 @@ static inline unsigned int cpufreq_quick return 0; } #endif +int cpufreq_prepare_transition(struct oppoint *cur, struct oppoint *new); +int cpufreq_finish_transition(struct oppoint *cur, struct oppoint *new);
/*********************************************************************
> > thanks, > > greg k-h > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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